package com.xxxx.spring.day01;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeansException;
import org.springframework.beans.PropertyValues;
import org.springframework.beans.factory.config.DestructionAwareBeanPostProcessor;
import org.springframework.beans.factory.config.InstantiationAwareBeanPostProcessor;

@Slf4j
public class MyBeanPostProcessor implements InstantiationAwareBeanPostProcessor, DestructionAwareBeanPostProcessor {

    @Override
    public void postProcessBeforeDestruction(Object bean, String beanName) throws BeansException {
        if(beanName.equals("lifeCycleBean")){
            log.debug("<<<<<< 销毁方法之前执行 , 如 @PreDestroy");
        }
    }

    @Override
    public Object postProcessBeforeInstantiation(Class<?> beanClass, String beanName) throws BeansException {
        if(beanName.equals("lifeCycleBean")){
            log.debug("<<<<<< 实例化之前执行 , 这里返回的对象会替换掉原本的bean");
        }
        return null;
    }

    @Override
    public boolean postProcessAfterInstantiation(Object bean, String beanName) throws BeansException {
        if(beanName.equals("lifeCycleBean")){
            log.debug("<<<<<< 实例化之后执行 , 如果这里返回false 会跳过依赖注入阶段");
        }
        return true;
    }

    @Override
    public PropertyValues postProcessProperties(PropertyValues pvs, Object bean, String beanName) throws BeansException {
        if(beanName.equals("lifeCycleBean")){
            log.debug("<<<<<< 依赖注入阶段执行 , 如 @Autowired @Value @Resource");
        }
        return pvs;
    }

    @Override
    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
        if(beanName.equals("lifeCycleBean")){
            log.debug("<<<<<< 初始化之前执行 , 这里返回的对象会替换掉原本的 bean , 如 @PostConstruct @ConfigurationProperties");
        }
        return bean;
    }

    @Override
    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
        if(beanName.equals("lifeCycleBean")){
            log.debug("<<<<<< 初始化之后执行 , 这里返回的对象会替换掉原本的 bean , 如 代理增强");
        }
        return bean;
    }
}
